出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We describe how the coupling of the gluonic Polyakov loop to quarks solves different inconsistencies
in the standard treatment of chiral quark models at finite temperature at the one quark
loop level. Large gauge invariance is incorporated and an effective theory of quarks and Polyakov
loops as basic degrees of freedom is generated. From this analysis we find a strong suppression
of finite temperature effects in hadronic observables below the deconfinement phase transition
triggered by approximate triality conservation in a phase where chiral symmetry is spontaneously
broken (Polyakov cooling). We also propose a simple phenomenological model to describe the
available lattice data for the renormalized Polyakov loop in the deconfinement phase. Our analysis
shows that non perturbative contributions driven by dimension-2 gluon condensates dominate
the behaviour of the Polyakov loop in the regime Tc < T < 6Tc.
